Duke Energy's PowerPair Program Shows Solar-Plus-Storage Can Be a Cost-Effective Grid Resource

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Duke Energy's PowerPair pilot program in North Carolina has deployed 54 MW of rooftop solar and 72 MW of battery storage across 6,297 customers in just two years, leveraging $179 million in private capital investment with only $48.6 million in ratepayer incentives. Experts from Vote Solar, the Southern Alliance for Clean Energy, and the Sierra Club demonstrated in regulatory testimony that expanded PowerPair deployment could be significantly more cost-effective than traditional utility infrastructure, with solar resources 80% cheaper per MW than Duke's proposed gas plants and batteries 85% cheaper than proposed combustion turbines.